PVC DWV Increaser-Reducer Coupling (H x H)

The Spears PVC DWV Increaser-Reducer Coupling (Hub x Hub) provides a dependable solution for connecting drain, waste, and vent piping of different diameters. Its reducing hub x hub design creates a smooth transition while maintaining reliable solvent-weld joints for non-pressure drainage systems.

Manufactured from durable PVC, this fitting offers outstanding corrosion resistance, smooth interior surfaces for efficient flow, and long service life in residential, commercial, and institutional DWV installations.

Key Features

• PVC DWV increaser-reducer coupling
• Hub x Hub (H x H) reducing connections
• Connects different pipe diameters in DWV systems
• Designed for non-pressure drain, waste, and vent applications
• Excellent corrosion and chemical resistance
• Smooth interior promotes efficient drainage flow
• Lightweight and easy solvent-weld installation
• Suitable for residential and commercial plumbing systems

Construction Details

Manufactured from high-quality PVC, the increaser-reducer coupling provides dependable dimensional accuracy and long-lasting performance in gravity-flow drainage systems.

The hub x hub reducing design allows for a secure solvent-weld connection while providing a smooth transition between different pipe sizes.

PVC construction resists rust, corrosion, and many common chemicals, helping maintain system performance and minimize maintenance over time.

Important Notes

Intended for non-pressure drain, waste, and vent (DWV) applications only.

Manufactured to meet ASTM D2665, ASTM D1784, CSA B181.2, and applicable NSF/ANSI standards.

Use approved PVC primer and solvent cement and follow local plumbing codes and manufacturer installation recommendations.